In addition to his television and big screen appearances, Kline has hosted two game show pilots, Jumble in 1988 and To Tell the Truth in 1990. The show's rights were then sold to NBC with Gordon Elliott, then Lynn Swann and Alex Trebek later hosting. Kline's TTTT pilot did air on the East Coast as a mistake on September 3, 1990, the day the show debuted. He also subbed for Charles Nelson Reilly as a guest panelist on Sweethearts for a week of shows in December 1988. His game show Celebrity appearances included both The $25,000 and $100,000 Pyramid, Super Password, All New All-Star Beat the Clock, and Body Language. Kline also won $10,000 on The $10,000 Pyramid as a civilian contestant in 1974. Kline told SitcomsOnline.com he would like to compete on Jeopardy!.